Timber tunnel portal

Discussion in 'Scratchin' & Bashin'' started by MasonJar, Jan 22, 2004.

  1. MasonJar

    MasonJar It's not rocket surgery

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    I have recently "discovered" that I will "need" one of these... ;) but I'd like to scratch build it.

    Can anyone tell me, or point me to a source, that would specify the dimensions of the timber used? Seems it would have to be pretty heavy stuff - maybe 10x10 or 12x12 (or bigger?) backed by 2x10 or 4x10?

    Comments, advice, suggestions please!

    Thanks... :)

    Andrew
  2. Fred_M

    Fred_M Guest

    The ones I seen in real life appear to be made from ties. Heres on I made in HO using bass wood from 3/32 square stock. They are prob. a tad small, but no one seems to notice. The big beams are 1/4. DASH

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  3. MasonJar

    MasonJar It's not rocket surgery

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    Thanks dash for the measurements... 3/32 scales to about 8 inches, and 1/4 is just under 22 inches. Those are "big" big beams, and the smaller ones seem about right for ties.

    Is that ceiling tile "limestone" visible in the cut?

    Andrew
  4. Fred_M

    Fred_M Guest

    Yes, ceiling tile. The lights spots are due to the flash and are not seen under overhead light. DASH
  5. Drew1125

    Drew1125 Active Member

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    They would be heavy support timbers, anywhere from 8x8's to 12x12's...
    In most cases they would have been produced by a RR timber & tie plant, & treated with creosote.
  6. RailRon

    RailRon Active Member

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    I built a few wooden tunnel portals from a drawing in a RMC or MR. (Didn't find the drawing at the moment, sorry! :()

    This one is on a H0n3 diorama (scenery is not finished - no, that's not snow! :D)
    As you see, the timbers really are on the heavy side, I'd say in the 12"x12" range.

    Ron

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  7. RailRon

    RailRon Active Member

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    And here another one, this time in N scale.
    Again, the timbers are quite heavy. For sure they are more massive than the ties of the RR track.

    Ron

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  8. MasonJar

    MasonJar It's not rocket surgery

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    And here it is...

    Thanks for the help everyone!

    Here is what I came up with. The blue "hill" in the picture is just to make things a little darker in the "tunnel" so you get an idea of how it will look.

    Andrew

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  9. MasonJar

    MasonJar It's not rocket surgery

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    Another shot

    I will add the external bracing (a la Railron) later. I built the portal from "funwood" - it is also from Midwest, but is cheaper, and not really "to-scale" sizes.

    This is my P2K 0-6-0 hauling the local run.

    Andrew

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  10. Fred_M

    Fred_M Guest

    Looks good. I don't know that there really is a scale when it came to rough cut wood in the old days. I don't think some sawmills even owned a ruler before 1900. They just cut them to get the best yeild. Our old barn was built out of hand sawed oak beams between 6X6 and 14X14. DASH
  11. Matthyro

    Matthyro Will always be re-membered

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    Lookin' good Andrew. It will look right at home once you scenic it in place.
  12. Arlaghan

    Arlaghan Member

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    Looks great, Andrew!

    I guess you will need another for the other end of the tunnel?

    :thumb: :thumb: :thumb:
  13. jon-monon

    jon-monon Active Member

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    Looks great Andrew!

    And so does your Ron! (No Swiss portal jokes from the peanut gallery)

    :thumb: :thumb: :thumb:
  14. MasonJar

    MasonJar It's not rocket surgery

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    Thanks everyone for the kind comments!


    Arl - I have a plaster "stone" portal from Jordan Products for the other end. I have already painted and weathered it. I used it to get the approximate size for the wooden portal.

    What I really need is a mountain in between! ;)

    Andrew